LiftMaster / Accessory reference

LiftMaster 837LM

LiftMaster 837LM: Plug-in myQ LED light rated at 1,000 lumens, for wall or ceiling mounting; up to 16 lights per opener, hub or gateway.

US source scopeUpdated 2026-09-12Independent Anderson reference

Match the whole number.

Manufacturer identifier: 837LM. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detail	Plug-in myQ LED light rated at 1,000 lumens, for wall or ceiling mounting; up to 16 lights per opener, hub or gateway. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
Supplier-stated detail	App control requires a supported LiftMaster or Chamberlain myQ opener, Smart Garage Control or myQ Internet Gateway. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
Supplier-stated detail	Use with LiftMaster 8500/8500C or Chamberlain RJO20/RJO20C requires a separately sold 889LM wall control manufactured in December 2022 or later. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
Selection limitation	The manufacture date concerns the wall control. Other RJO suffixes, older controls and unspecified gateway identities are not covered by the four-model statement. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco

Documented fitment & exclusions

Read the exact equipment or component, market, production and variant limits in every row. An omitted pairing has not been verified by this reference.

Source statements and their exact conditions. Use the checker below to compare equipment or a component.
Equipment or component / relationship	Evidence and conditions
RJO20 Documented compatibility From 837LM to RJO20.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed required-wall-control wall-control-manufacture-date source conditions required adapter Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 837LM in the stated application with RJO20. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: RJO20 required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco Denco names 837LM in the stated application with 889LM. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500, 8500C, RJO20, RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
RJO20C Documented compatibility From 837LM to RJO20C.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed required-wall-control wall-control-manufacture-date source conditions required adapter Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 837LM in the stated application with RJO20C. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco Denco names 837LM in the stated application with 889LM. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500, 8500C, RJO20, RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
8500 Documented compatibility From 837LM to 8500.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed required-wall-control wall-control-manufacture-date source conditions required adapter Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 837LM in the stated application with 8500. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500 required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco Denco names 837LM in the stated application with 889LM. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500, 8500C, RJO20, RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
8500C Documented compatibility From 837LM to 8500C.	Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed required-wall-control wall-control-manufacture-date source conditions required adapter Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 837LM in the stated application with 8500C. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco Denco names 837LM in the stated application with 889LM. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500, 8500C, RJO20, RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco
889LM Adapter requirement From 837LM to 889LM.	Denco names 837LM in the stated application with 889LM. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Applies only within this source scope Market: US Model scope: 8500, 8500C, RJO20, RJO20C required-wall-control: LiftMaster 889LM wall-control-manufacture-date: December 2022 or later Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test. For the four named 8500, 8500C, RJO20 and RJO20C applications, install the separately sold 889LM control of the specified date. The date applies to the wall control, not the opener. Denco supplier reference: LO 837LMh1; span.sku; Description bullets: illumination/mounting, app prerequisite, paired-light functions and16-light limit; Description final Warning bullet: exact four models,889LM manufacture date12/22or later and separately sold control · checked 2026-09-12 · Denco

Direct replacement paths

No direct successor for 837LM is verified in this reference.

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Sources & scope

Denco supplier reference: LO 837LMDenco · US · checked 2026-09-12

Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.

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